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. 2017 Jun 20;7:3897. doi: 10.1038/s41598-017-04312-5

Table 3.

Percentage change with 95% CI in ischemic stroke admissions associated with a 10 μg/m3 increase in fine particulate matter (PM2.5) concentration for different lag structures.

Lag days Percentage change 95% CI P
Lag 0 days 0.31 0.17–0.45 1.57e-05
Lag 1 days 0.48 0.35–0.60 1.35e-14
Lag 2 days 0.48 0.37–0.58 <2e-16
Lag 3 days 0.32 0.22–0.43 2.62e-09
Lag 4 days 0.06 −0.05–0.16 0.308
Lag 0–2 days 0.80 0.64–0.96 <2e-16
Lag 0–4 days 0.75 0.58–0.93 <2e-16